Last.



S. D.-LAYMAN.

LAST.

APPLICATION man 050.23. 1914.

Patented July 13, 1915.

'WITNESSES W1. 6

UNITED snares Parana ornion STEPHEN D. LAYMAN,'OF NEWARK, NEW JERSEY.

LAST.

Specification of Letters latcnt. Patented J 1 3, 1915.

Application filed December 23, 1914. Serial No, 878,645;

other is spring-pressed outwardlyand so arranged that it may be pushed back into the body of the last against its spring.

It is to the improvement of the springpressed pins or fasteners used in lasts of this type that my invention is particularly directed. Such fasteners as are now-commonly found on the market comprise a sleeve, a spring within the sleeve and a pin also received within the sleeve and reduced in diameter for a portion of its length, in which portion it is encircled by the spring and the whole arrangement driven in place in an opening provided in the body block. Such arrangement has numerous disadvantages in that, for example, a driving fit is relied on to hold the device in place, and it may become loosened upon changes occurring in the wood due to varying conditions of heat and moisture; such devices are likely to be injured while being driven'in place; it is necessary to provide a ferrule in the opening in the block to reduce the opening if both the opening-in the block and that in the body are formed at one time and of the same diameter, as is most conveniently done; if, for any reason, it is'necessary to remove the fastener, it is very difficult to take it out if it happens to be tightly wedged or driven in place; the cost of such fasteners, includ ing sleeves, is a considerable'item in the production of alarge number of lasts in the factory, and other'difiiculties arise with such fasteners which need not be further referred to here. r

According to the present invention a very much simplified construction 7 is obtained, and the difficulties inherent in such former structures are done away with.

With the foregoing and related objects in'view, my invention consists in the parts,

improvements and combinations herein set forth and claimed.

I A form of last embodying my invention is illustrated in the accompanying drawing forming a part of this specification and wherein the same reference numerals are applied to designate the same parts throughout.

In said drawing, Figure 1 is a perspective" view of a last body, the block being detached. Fig. 2 is a fragmentary side view of the, last shown in Fig. 1. with the block in place on the body, certain parts being shown in cross-section, and Fig. 3 is a fragmentary cross-sectional'view on the line 3-3, Fig. 2.

The body or main portion of thelast is designated by the reference numeral 10, and the 'd'etach'able block which, together with the body, makes up thecomplete last, by the reference numeral 11. The stationary 'pin for holding the toe of the blockin place on the body is designated by the reference numeral 12. and the recess in thejtoe of the block 11 in which the pin 12 is received, by the. reference numeral 13. The guide recess for guiding the'pin 12 into the recess 13 is shown at 14. A bore'15 is formed in the upper portion of the block and preferably at one side thereof, and such bore is continued into the last body, as shown at.

15*. Such bores 15 and 15 arepreferably made at one time by boring through the block in place and into .the last body, as in this way accurate registration can most conveniently be obtained. The bore 15, 15 is placed at an angle to the longitudinal axis" of the pin 12, as is customary.

The pin 16 is received .within the bore 15 and has an upperpart 17 of theLoriginal' di-' ameter, a reducedportion 18 adjacent thereto, a part 19 of the original unreduced diameter and terminates in a stud 20 of reduced diameter and preferably of the same diam eter as the intermediate reduced portion 18.

The pin 16, which is preferably of cylin drical form, is, preferably made by'turnin g down a rod, as of steel, of original diameter slightly less than the diameter of the bore 15,15? Such pins can readily be made automatic machinery inlarge quantities and at smallexpense A coil spring 21 is jreceived at the bottom of the bore 15 and" bears against the shoulder formed between the portions 19 and 20 of the pin, the reduced portion 20 entering the coil spring 21 and centering the spring 21 with respect to the pin 16. The purpose of the reduced portion 18 is to provide a recess for receiving a stop to control the in and out movement of the pin 16, and in the form of construction shown, such stop has the form of a cross-pin 22 which is received Within a bore 23 in the body portion 10 of the last. lVith this arrangement the cross-pin 22 serves as a stop for the movement of the pin 16 in both directions. Normally it is pushed outward by the spring 21 until the enlarged portion 19 thereof rests against the stop pin 22. When the pin 16 is pushed inward against the spring 21 the stop pin 22 serves as a means for defining the limit of the inward movement of the pin 16 by the enlargement 17 coming in contact therewith. The enlarged portions-17 and 19 are always in contact with the interior of the bore 15 and, fitting therein fairly close but not sufiiciently close to bind, give a double sliding bearing at separated points, thus insuring that there will be no binding of the pin in its movement in and out of the bore 15 Furthermore, if, as sometimes happens in the rough treatment to which lasts are submitted in the shoe factory, a blow is struck on the proj ecting portion 17, as by a hammer, or if the projecting end 17 of the pin 16 is given a severe wrench, as in removing the movable block 11 or putting the same in place upon the last, the double bearing at separated points provided by the enlargements 17 and 19 prevents any harm from being done to pin or last by such treatment, since with such double bearing at separated points the pin is not easily gotten out of shape or broken by being subjected to blows or other rough treatment.

The method of fastening the block in place and of detaching it is that usually practised with lasts of this kind. To fasten the block in place it is inserted in the recess provided for that purpose, the pin 12 entering the guideway I l and being guided thereby into the opening 13, and the block being pressed against the body to retract the pin 16 into its seatuntil it comes opposite the opening of the bore 15 in the block, when it springs into the seat provided for it by said bore, thus holding the block against re moval; and to remove the block the pin 16 is pushed down by a suitable tool inserted within the mouth of the bore 15, thus permitting the movement of the block 11 across the end of the pin 16 and its consequent ready removal from the last body.

It will be seen that a fastener constructed in accordance with my invention has numerous. advantages: It is. extremely cheap, there is; no occasion for a preliminary assembly of the partsprior t0 insertion. in the opening provided for their reception, all that is nec essary to secure such fastener in place being to insert the spring 21 and pin 16 in the bore 15 with the stud 20 entering the central opening in the spiral spring, and to drive the cross-pin 22 into the cross-bar provided for that purpose, the pin 16 being meanwhile held down so that the cross-pin 22 may enter the recess surrounding the re duced portion 18 and between the enlarged parts 17 and 19. While the cross-pin 22 is here shown as passing entirely through the last body and at one side of the reduced part 18, it will be understood that such precise arrangement is not essential and that such cross-pin 22 need not extend entirely through the body and may be arranged differently with respect to the pin 16, all that is necessary being that a portion of a cross-pin shall enter a recess in the pin so as to serve as a stop to both inward and outward movement of the pin 16. Since the pin 16 is substantially of the full diameter of the bore in the last it can be made of a fairly large section and thereby obtain a satisfactorily large bearing on the interior of the bore in the block so that it becomes unnecessary to provide a metal ferrule or other lining for the bore 15 in the block. Further with the part 18 being made of reduced diameter, a recess is provided on all its sides between it and the walls of the bore 15 so that the pin 16 may turn freely and can present all its sides for wear from time to time, thus preventing excessive wear on one side and preventing the pin from getting a set to one side by being always pressed in one direction. While the fastening pin is held and anchored in place by the cross-pin 22 in such manner that it is securely retained in place, it is possible if, for any reason, occasion should arise for the removal of the fas tener to effect its ready removal by driving out or otherwise removing the crosspin 22, whereupon the pin 16 can be readily removed, and with it the spring 21. These and other features of advantage combine to make my improved fastener a much more desirable construction than has heretofore been available.

It is to be understood that the drawing accompanying this specification is for the purpose of illustration only and that varia tions in and modifications from the present form shown may be resorted to, within the scope of my claims, without departing from my invention or sacrificing any of its advantages.

Having thus described my invention, ll claim:

In a last comprising a body part and a separable block with registering bores, a pin in the bore in the body part and having two separated sections of substantially the same diameter as the bore and an. intermediate section and an end section both of reduced In testimony that I claim the foregoing, diameter, stop means in the body part and I hereto set my hand, this 19th day of De- 10 extending into1 said bore an? prgxmity cember, 1914.

to the interme iate section 0 re uce iameter, and a coil spring in the bottom of the STEPHEN LAYMAN' bore in the body part and having the end Witnesses:

section of reduced diameter received Within M. A. J QHNSON,

its coils, substantially as set forth. 7 H. TRAUTVETTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

